baber/WOPTO huggingface dataset:
Patent GB-1214113-A (GB)
Title: Improvements relating to photographic processing apparatus
IPC: G03B17/52
Filed: 1969-03-20
Abstract: 1,214,113. Photographic processing apparatus. POLAROID CORP. March 20, 1969 [March 20, 1968], No.14765/69. Heading G2A. Photographic apparatus for distributing a liquid in a layer between two layers of photographic sheet material comprises a pair of spreader members 20, 22 having adjacent portions 40, 42 spaced apart to form a narrow pressure-generating gap through which the sheet material is movable in contact with the members, the two sheet-contacting surfaces each having a convex curvature in the direction of the length of the gap, the curvature extending the entire length of the gap, and means for urging the memberstoward one another. The spreader members are preferably non-rolling and are urged towards one another by springs (24), (26) Fig.2 (not shown). The apparatus is used in a self-developing camera to effect diffusion transfer between a flexible image recording sheet and a stiffer image receiving sheet by the rupture of a pod of processing fluid pulled through the gap. The surface of the rigid member contacting the stiffer sheet is preferably formed with a greater degree of convexity than the surface contacting the more flexible sheet. An initial gap is formed by a pair of raised surfaces 44, 46 provided on , member 20.
Patent GB-1004446-A (GB)
Title: Process for the manufacture of polyvinyl alcohol granules
IPC: C08J3/12
Filed: 1964-04-09
Abstract: 1,004,446. Granulating polyvinyl alcohol. RHONE-POULENC S.A. April 9, 1964 [April 11, 1963], No. 14785/64. Heading B5A. A process of granulating a polyvinyl alcohol gel, formed by the alkaline alcoholysis of a polyvinyl ester, comprises extruding the gel through the perforated plate of an extrusion granulator by means of a piston, the granules so formed being subsequently dried. The gel may be formed by catalysing a solution of polyvinyl acetate in methanol with an aqueous, methanolic or aqueous-methanolic solution of sodium hydroxide. A plasticizer such as glycerine may be added. Several detailed examples are given.
Patent GB-1120942-A (GB)
Title: Improvements relating to welded structures and methods and machine for forming same
Inventor: SLADE CHARLES EDWARD
IPC: B23K11/06
Filed: 1964-04-11
Abstract: 1,120,942. Welding by pressure. WELSH METAL INDUSTRIES Ltd. 8 July, 1965 [9 April, 1964], No. 14795/64. Heading B3R. In welding are placed in f wire between the inner faces, electric resistance welding of the portions and wire is effected pressure being the outer faces and the area of welding is moved along substantially wider than the wire. One of the edges of metal sheets e.g. to form a radiator is provided with a circular section mild steel wire in the direction of the edge by electrical tack welding, the other edge is placed in contact with the wire and the edges are roller electrode seam welded. The wire may be flattened to become flush with the outer edges of the plates or may extend therebeyond. The welding is effected by a head having a pair of side members 20, Fig. 4, secured to a base 21 mounted on castors 47 on a table 63, the side members 20 supporting a housing 23 in which is journalled a shaft 23 for a lower roller electrode 17 and a housing 33 in which is journalled a shaft 32 for an upper roller electrode 18. The housing 23 is vertically adjustable and the housing 33 is pivoted, a pneumatic cylinder and piston unit 35 causing movement of the housing 33. To effect movement of the welding head the electrode 18 is driven by an air motor 45 and the head is provided with rollers 51 contacting a trackway 50 and rollers 55, 56, Fig. 5, contacting another track member. A transformer 60 on the base supplies current to the electrodes. A grinding wheel and/or a pressure roller may be mounted on the head to act on the edges of the plates. The wire may have a square, rectangular or elliptical section.
Patent GB-1247867-A (GB)
Title: Flexible moulds
Inventor: WILLIAMSON JOSEPH NOEL
IPC: B29C33/38
Filed: 1968-03-28
Abstract: 1,247,867. Silicone flexible moulds. IMPERIAL CHEMICAL INDUSTRIES Ltd. 18 March, 1969 [28 March, 1968], No. 14965/68. Heading B5A. Silicone flexible moulds are prepared by forming a layer of an organopolysiloxane fluid composition on the surface of a master pattern, curing the composition to form an elastomer by means of a curing agent provided by the surface of the master pattern and removing the cured elastomer from the master pattern. A curing agent may be additionally incorporated into the organopolysiloxane composition itself, preferably substantially less than incorporated in the master pattern. The master pattern may be smooth or embossed. The master pattern may be made (i) by coating a substrate e.g. a sheet of paper or fabric with a thermoplastic composition e.g. of P.V.C. containing the curing agent and fusing, or (ii) by applying a solution of the curing agent on a smooth or embossed sheet of paper and evaporating the liquid or (iii) by coating the surface of a premade, smooth or embossed master pattern with a composition including the curing agent and e.g. one or more film-forming polymers e.g. polyvinyl chloride or polymethyl methacrylate. The coat ing composition may advantageously include a dulling agent e.g. finely-divided silica. In the examples, a flexible mould is made for use as a casting band in the manufacture of plastics sheet material. The mould is also preferably provided with a supporting substrate of non- woven, woven, knitted or felted material, metal sheet or gauze or glass fibre or gauze.
Patent GB-1085791-A (GB)
Title: Improvements in or relating to and apparatus for providing a desired atmosphere in a sleeping space
IPC: A61G10/00
Filed: 1963-04-16
Abstract: 1,085,791. Ventilating beds. C. B. JOLY. April 16, 1964 [April 16, 1963; Dec. 16, 1963], Nos. 14967/63 and 49653/63. Heading A4J. [Also in Divisions A5 and F4] Apparatus for providing a desired atmosphere in a sleeping space comprises telescopic rods 8, 9 which are hingedly secured to a foot-board 7 of a bed so that they may be extended and braced by struts 10 to support a cover 11 and flexible curtain 12 which co-operate with a bed 1 to define a sleeping space for the body and legs of a person while leaving his head outside the sleeping space. Air is drawn through a vent 18 and is heated or cooled by thermostatically controlled heating and refrigerating units 14, 15 which maintain the desired temperature. An air cleaner may be provided. A fan 16 blows the air into the sleeping space through a grid 17. The footboard 7 is vertically adjustable on uprights 3, 4 so that the cover supporting rods 8, 9 may be raised or lowered. Cover 11 is pleated and can be folded concertina-wise into a compartment 13 in a foot-board 7.
Patent GB-366833-A (GB)
Title: Improvements in or relating to hand-wind-gauge
IPC: G01P5/06
Filed: 1931-05-21
Abstract: 366,833. Anemometers. OSTMAN, C. J., 28, Flemingatan, Stockholm. May 21, 1931, No. 15000. [Class 97 (iii).] A hand wind gauge is pro. vided with a single member adapted both to connect the rotatable vane wheel to the indicating mechanism when desired and to serve as a means for returning the indicating mechanism to the zero or any other position when the vane wheel and indicating mechanism are disengaged. In the form shown the spindle of the vane wheel C carries a worm E driving a wheel F on the shaft G which extends into the handle H and carries a worm I. A spindle M carries the pointer N, working over a dial L, the toothed wheel K, and knurled button P and is urged to the right by the spring R so that the wheel K and worm I are out of engagement. In this position the pointer N may be adjusted by turning the button P. The wheel K and worm I are brought into engagement by depressing the button P. In a modification the spindle M may be spring urged into the engagement position.
Patent GB-1375173-A (GB)
IPC: B61L3/12
Filed: 1971-05-14
Abstract: 1375173 Train control BRITISH RAILWAYS BOARD 1 May 1972 [14 May 1971] 15040/71 Heading B7N  In a railway signalling system, a train 10 entering a section 12, 13 receives from a transponder 17 the identity number of the signal 18 at the entry to the next section so that it responds only to signals picked up by its receiver 16 from transmitter 15 which transmits the aspect and identity of said entry signal 18. The entry signal-train transmission is by directional S.H.F. which is angle modulated so that the nearest (next ahead) transmitter "captures" the receiver. Should the strongest "capturing" signal not carry the correct identity a fail condition is indicated. Where a number of lines are adjacent a time division multiplex system can be used.
Patent GB-185216-A (GB)
Title: Improvements in or relating to the production of coal briquettes
IPC: C10L5/22
Filed: 1921-05-31
Abstract: 185,216. Stenning, W. W., Beasley, W. H., and Minerals Separation, Ltd. May 31, 1921. Flotation processes.-The froth obtained in the froth flotation process for concentrating coal is mixed with a binding medium such as finely divided pitch with or without naphthalene, tar &c., and is subjected to heat and to such agitation as will eliminate air to ensure the agglomeration of the coal particles. The coal under treatinent is preferably suspended in the minimum of water necessary to make a mobile pulp. In an example crushed Powell Duffryn coal is subjected to froth flotation with specified quantities of cresol and paraffin oil, and the resulting froth, containing about equal parts of coal and water is treated with binding medium for agglomerating the coal particles. Specifications 122,454 and 155,875 are referred to.
Patent GB-663425-A (GB)
Title: Process for preparing allyl acrylate from acrolein and the allyl acrylate so produced
IPC: C07C69/527
Filed: 1949-06-07
Abstract: Allyl acrylate is obtained by mixing a quantity of acrolein which, upon dilution of a test portion thereof at about 25 DEG  C. with 25 times its volume of iso-octane saturated at about 25 DEG  C. with water forms a clear solution, with an aluminium alcoholate and an organic solvent and after reaction has occurred, recovering allyl acrylate from the mixture.  It is preferred to use aluminium isopropoxide as the alcoholate but other aluminium alcoholates such as aluminium-ethoxide, -propoxide, -allyloxide, -isobutoxide and -chloro-isopropoxide may be employed.  Alcoholates of alcohols containing 1 to 3 carbon atoms are preferred.  Aluminium isopropoxide may be prepared by reacting metallic aluminium and isopropyl alcohol using a catalyst such as mercuric chloride, if desired.  The crude isopropoxide may be used directly by dissolving it in an organic solvent and removing any sediment or it may first be purified.  It is preferred to use from 0.04 to 1.0 mole. of the alcoholate per mole. of acrolein.  Specified solvents are xylene or other aromatic hydrocarbons, carbon tetrachloride, chloroform or other halogenated hydrocarbons, ethyl acetate or other esters, ethyl alcohol, isopropyl alcohol or other alcohols and diethyl ether or other ethers.  About 10 to 1000 volumes of the solvent per 100 volumes of acrolein is convenient.  The reaction is preferably effected at between 0 DEG and 65 DEG  C. and the allyl acrylate may be recovered from the reaction mixture by selective solvent extraction followed by distillation of the extract, by direct distillation or by steam distillation.  Three examples are given, the acrolein being reacted with a saturated solution of aluminium isopropoxide in xylene.  In one of the examples some allyl alcohol is also separated from the reaction product.  When the acrolein gives a turbid solution when tested before use it must be purified to give a clear solution on testing, e.g. by cooling to a temperature near, but above its freezing-point, say to -70 DEG  C., and filtering off any separated material and it may be fractionally distilled.  Another method of purifying the acrolein is to fractionally distil it under reduced pressure, condensing the distillate with the aid of refrigeration and collecting only the constant boiling portion for use in the process. The liquid acrolein may also be purified by contacting it with an adsorbent or absorbent solid inert to acrolein, such as charcoal, alumina, anhydrous calcium sulphate, kieselguhr, pumice, silica gel, asbestos or clay Specification 654,663 is referred to.
Patent GB-181007-A (GB)
Title: Improvements relating to refrigerating installations with rotary compressors
IPC: F25B49/02
Filed: 1922-05-30
Abstract: 181,007. Akt.-Ges. der Maschinenfabriken Escher, Wyss, et Cie. May 30, 1921, [Convention date]. Automatic gear.- In a refrigerating- plant provided with a rotary compressor driven by a fluidpressure engine or an electric motor, the speed of the engine or motor is made dependent upon the pressure in the liquefier or evaporator, or upon the height of the liquid in the liquefier which liquid may also operate a float device to control a throttle valve leading to the evaporator. The compressor 1 is connected to a liquefier 3, Fig. 1, and an evaporator 8 by means of a pipe 9. A tank 4 and a throttle valve 6 are interposed between the liquefier 3 and the evaporator 8. The pressure in the evaporator operates a spring-pressed piston 11 connected through a floating lever 14 to a valve 16, 17 controlling motors 18, 19 which are operated to rotate wheels 21, 22 to raise or lower the turbine-supply valve 25. A float 33 in the tank 4 similarly adjusts the point 39 of the lever 14 to move the valve 25. The screw 23 carrying the valve 25 is connected to a piston 24 operated by a speed governor 28 through a fluid relay. In modifications, the tank 4 is dispensed with, the liquefier 3 is connected directly to the valve 6, and either the liquefier or evaporator pressure alone is adapted to control the valve 16, 17. The speed of the compressor is increased or decreased when the liquefier or evaporator pressure rises or falls, or the float 33 falls or rises respectively. When the compressor is driven by an electric motor, the above control devices may vary the resistance in the supply current, or adjust the brushes, or otherwise control the motor.
Patent GB-742103-A (GB)
Title: An improved method of casting tubular metal bodies
IPC: B22C3/00
Filed: 1951-06-26
Abstract: 742,103. Casting-machines. AKTIEBOLAGET AKERS STYCKEBRUK. June 26,1951 [March 9, 1951], No. 15162/51. Class 83 (1). Mould materials.-In making tubular bodies by centrifugal casting in hot metal moulds, these are lined with a mixture of an insulating material, the individual particles of which are porous, with an adhesive applied in such a way that the porosity is retained. The porous material may consist of tripoli, mica rendered porous by heating, or preferably kieselguhr and the adhesive of clay or bentonite with enough water to make a suspension suitable for spraying. 5 to 10 litres of kieselguhr may be mixed with 1 to 5 decilitres of bentonite and 10 litres of water. The mould is heated to above 100‹ C. before spraying with a fan-like spray and may be rotated during this process. In a modification the suspension is spread over the mould by centrifugal action.
Patent GB-1194606-A (GB)
Title: Improvements in or relating to Automatic Clamp Bands for Tire Forming Apparatus
IPC: B41M5/10
Filed: 1968-03-20
Abstract: 1,194,606. Moulding tyres. NATIONALSTANDARD CO. 29 March, 1968 [19 April, 1967], No. 15260/68. Heading B5A. The separable halves M1, M2 of a tyre mould of the kind in which an air bag presses a tyre blank against the mould walls are clamped together by a channel section band which embraces adjacent flanges 61, 63 of the mould halves, and is tightened and locked in position by pneumatic piston and cylinder motors 111 and 152. The band comprises sections 66 and 68 pivoted to a section 67; the motor 111 is connected across the ends of the band by means of brackets 122, 130 having pivots 120, 128 to which are respectively connected the motor cylinder and its piston-rod. The motor 152 is located in a plane above the motor 111, and operates a toggle linkage 174, 181 which locks the band about the mould halves. The piston-rod 160 of the motor is pivotally connected to a lug 166, and its cylinder is pivotally connected by arms 169 to a link 174 pivoted at 176. One end of the other link 181 of the toggle is pivoted at 184 to a lug 186, and its opposite end is threaded and pivoted to the link 174 at 190. When compressed air is fed to the motors to tighten the band, the motor 152 swings in a horizontal plane above the motor 111. The mould assembly is mounted on a framwork 20, and the mould half M1 is pivoted upwardly from the lower half about a pin 52 by a pneumatic motor. When the band is released, stop members on the framework engage lugs on the band. A tension spring 140 connected between the band and framework urges the band towards the closing position.
Patent GB-991315-A (GB)
Title: Blends of poly (methyl methacrylate) and graft copolymer resin
IPC: C08L33/12
Filed: 1962-04-19
Abstract: A moulding composition comprises a blend of (a) polymethyl methacrylate and (b) a graft copolymer of (1) a diene rubber, at least the majority of the latex particles having a size of less than 1000 <\>rA, and (2) a mixture of vinyl cyanide and a vinyl aromatic hydrocarbon. The example describes blends of polymethyl methacrylate with a graft copolymer of styrene and acrylonitrile on polybutadiene.
Patent GB-543525-A (GB)
Title: Improvements in or relating to machine tools for rounding the ends of irregularly shaped workpieces
IPC: B23F19/10
Filed: 1940-10-18
Abstract: 543,525. Rounding gear-teeth. CIMATOOL CO. Oct. 18, 1940, No. 15450. Convention date, Oct. 21, 1939. [Class 83 (iii)] Milling-cutters. - A machine for rounding the ends of gear teeth or like irregular workpieces comprises a rotary cutter and a rotarv work-supporting spindle which is moved perpendicularly to its axis in timed relation to its rotary movement. The cutter-head 13 carries a driving motor 17 for the spindle 15 of the cutter 14 and is movable transversely of the cutter spindle on a table 20 by means of a hydraulic cylinder which moves the cutter into a working position which is determined by a stop. The table 20 is movable longitudinally of the cutter-spindle on a plate 27 by means of a screw spindle 28 and the plate is itself movable in the same direction by a hydraulic cylinder 30. In rounding the teeth of an internal gear, as shown, the cutter for the tooth-ends which are farther from the cutter head is as shown at 14, Fig. 5, while the cutter for the nearer tooth ends is as shown at 35. The cutters both have profiled milling-edges 36 which effect the rounding. For plane-ended teeth the work movement consists of a rotation about its axis combined with a timed movement perpendicularly to the work axis (arrow a). For teeth having the upper parts bevelled off as shown at 37, Figs. 5 and 8, the work has an additional axial movement (arrow b). The tool is advanced to its correct cutting position by successive movements in the directions c and d. The work spindle 39 is mounted in bearings 40 and encloses a clamping-rod 45 which is moved by a hydraulic cylinder 49 to clamp a retainer plate against the work piece. A gear 52 on the spindle is connected through gearing 54 to a countershaft 57 driven from a motor 70 through belt gearing 69, shaft 67, and gears 65, 66. During the rotation of the work-spindle the entire work-head is moved transversely by a cam on the shaft 61. For moving the work axially in rounding a gear having bevelled end surfaces 37 the shaft 61 carries a cam 79 acting through a rock arm 80 on a lug 85 on the spindle carriage 41. A spring 90 acts through a lever 86 to maintain the arm 80 against its cam. Means are provided for replacement of the gear 60 and feed cams and for relative adjustment of these cams relative to the gear 60. The machine may also be used for rounding external gears.
Patent GB-240768-A (GB)
Title: Improvements in and relating to corner fastenings for mattress frames
IPC: A47C19/00
Filed: 1925-06-15
Abstract: 240,768. Gale, F. G. June 15, 1925. Mattresses.-A mattress frame comprises tubular side and end rails 1, 2 of square cross-section, and corner connecting pieces, each consisting of a base 4, upstanding legs 5, 6 and a support 7, the leg 6 being extended downwards at 8 to close the end of the rail 1 and upwards at 14, and a flange 9 being provided, at right angles to the member 14, to close the end of the rail 2. The rail 2 may be adjustably secured to the support 7 by a bolt 11 passing through a slot 12, and the tension of the mattress 3 may be adjusted by turning the nut 16 on the bolt 13, 15, after having loosened the nut 17.
Patent GB-961469-A (GB)
Title: Improvements in or relating to passenger-carrying road vehicles
Inventor: BURRIDGE ANTHONY ARTHUR
IPC: B60R7/04
Filed: 1962-04-24
Abstract: 961,469. Body details. WILMOT BREEDEN Ltd. April 23, 1963 [April 24, 1962], No. 15487/62. Heading B7B. A disposable container 10 is disposed in the luggage space of a vehicle and is accessible from the passenger compartment. A drain tube 12 to the wheel arch may be provided.
Patent GB-1176608-A (GB)
Title: Road marker stud.
Inventor: KONE ELLIOTT HIRSH
IPC: E01F9/07
Filed: 1968-04-01
Abstract: 1,176,608. Road marker studs. E. H. KONE. 1 April, 1968, No. 15564/68. Heading E1G. A road stud comprises a base cup 12 closed by a spring-loaded resilient diaphragm 22 carrying a reflector or other indicator 14, the diaphragm comprising a central portion surrounded by a preformed U-section portion 60. On depression of the indicator 14 by a vehicle wheel the portion 60 is flexed upwardly (Fig. 3, not shown) with a snap action giving audible warning. The circular diaphragm shown has a backing disc 56 and parallel ribs 52 locating an apertured holder 38-50 for a rectangular plastics lens 36.
Patent GB-640517-A (GB)
Title: Improvements in or relating to radio retransmitting systems
IPC: H04B7/155
Filed: 1947-06-12
Abstract: 640,517. Radio receiving systems; radio signalling. ROBINSON, J. June 12, 1947, No. 15566. [Class 40 (v)] In a relay system the receiver has directional aerials 15, 16 or two aerials forming a directional system and develops separate outputs consisting of the sum and difference of the signals induced in the aerials due to the distant transmitter 12 and one or more local relay transmitters 13, 14. The sum signal substantially neutralizes the effect of the transmitters 13, 14; the difference signal is used to control the transmitters 13, 14, or an auxiliary transmitter 22, so that any remaining effect of the local transmitters 13, 14 is neutralized or reduced. The transmitters 13, 14 and crossed loop aerials 15, 16 are symmetrically located relative to the transmitter 12 and transmitter 22 lies in a direction bisecting the angle made by the loops or is laterally displaced (to 22A) to compensate for reflection effects. In Fig. 3 the difference signal from the receiver 17 passes through a phase adjuster 23 and buffer valve 27 and controls the amplitude and phase of transmitter 13, the sum signal passing to both transmitters 13 and 14, to the former through a buffer valve 24. Alternatively, Fig. 4 (not shown), the difference signal is passed through phase adjusters to tuned input circuits of one or both aerials. In Fig. 7 (not shown), the loops feed valves with tuned anode circuits having inductively coupled to them series-connected coils and series-opposition coils respectively, from across which the sum and difference signals are taken. In Figs. 5 and 6 (not shown), the aerials are parallel loops or non- directional aerials spaced an odd number of half-wavelengths apart, preferably loops lying symmetrically and-perpendicularly to the transmitters 13, 14. Specification 574,047 is referred to.